Mushroom Powder
The Mushroom Powder is one of Toad's special items in Mario Kart Arcade GP, Mario Kart Arcade GP 2 and Mario Kart Arcade GP DX.
Upon being used, the Mushroom Powder will drop behind the user's kart, producing a purple cloud on the racetrack. Any racers that run into the cloud will lose speed and will also gain a random status effect chosen from the status effects associated with Mushroom items, such as the Invisible Mushroom or the Heavy Mushroom.
While the Mushroom Powder is a bag emblazoned with a Poison Mushroom icon, an unused alternate model of the Mushroom Powder exists which depicts it with a generic purple Mushroom instead.